The fastest version of the chip, the 3.6GHz Pentium 4 560, dropped by 35 percent from $637 to $417. The 3.4GHz Pentium 4 550 slipped by 33 percent from $417 to $278.

The 3.2GHz Pentium 4 540 dipped 22 percent from $278 to $218. The 3GHz Pentium 4 530 is down 18 percent, from $218 to $178.

Older P4 models also saw a price decrease.

Meanwhile, the chipmaker lowered prices by similar percentages on its older Pentium 4s, including chips such as the 3.4GHz and 3.4EGHz Pentium 4, which now cost $278, down 33 percent from $417. Those chips have been on the market much longer than the numbered Pentium 4s